Exemple #1
0
func (ss *serverStream) SetTrailer(md metadata.MD) {
	if md.Len() == 0 {
		return
	}
	ss.s.SetTrailer(md)
	return
}
Exemple #2
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// SetTrailer sets the trailer metadata which will be sent with the RPC status
// by the server. This can only be called at most once. Server side only.
func (s *Stream) SetTrailer(md metadata.MD) error {
	s.mu.Lock()
	defer s.mu.Unlock()
	if s.trailer != nil {
		return ErrIllegalTrailerSet
	}
	s.trailer = md.Copy()
	return nil
}
Exemple #3
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// SetTrailer sets the trailer metadata which will be sent with the RPC status
// by the server. This can be called multiple times. Server side only.
func (s *Stream) SetTrailer(md metadata.MD) error {
	if md.Len() == 0 {
		return nil
	}
	s.mu.Lock()
	defer s.mu.Unlock()
	s.trailer = metadata.Join(s.trailer, md)
	return nil
}
Exemple #4
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// SetTrailer sets the trailer metadata that will be sent when an RPC returns.
// It may be called at most once from a unary RPC handler. The ctx is the RPC
// handler's Context or one derived from it.
func SetTrailer(ctx context.Context, md metadata.MD) error {
	if md.Len() == 0 {
		return nil
	}
	stream, ok := transport.StreamFromContext(ctx)
	if !ok {
		return fmt.Errorf("grpc: failed to fetch the stream from the context %v", ctx)
	}
	return stream.SetTrailer(md)
}
Exemple #5
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// SetHeader sets the header metadata. This can be called multiple times.
// Server side only.
func (s *Stream) SetHeader(md metadata.MD) error {
	s.mu.Lock()
	defer s.mu.Unlock()
	if s.headerOk || s.state == streamDone {
		return ErrIllegalHeaderWrite
	}
	if md.Len() == 0 {
		return nil
	}
	s.header = metadata.Join(s.header, md)
	return nil
}
Exemple #6
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// SendHeader sends header metadata. It may be called at most once from a unary
// RPC handler. The ctx is the RPC handler's Context or one derived from it.
func SendHeader(ctx context.Context, md metadata.MD) error {
	if md.Len() == 0 {
		return nil
	}
	stream, ok := transport.StreamFromContext(ctx)
	if !ok {
		return fmt.Errorf("grpc: failed to fetch the stream from the context %v", ctx)
	}
	t := stream.ServerTransport()
	if t == nil {
		grpclog.Fatalf("grpc: SendHeader: %v has no ServerTransport to send header metadata.", stream)
	}
	return t.WriteHeader(stream, md)
}
Exemple #7
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// WriteHeader sends the header metedata md back to the client.
func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error {
	s.mu.Lock()
	if s.headerOk || s.state == streamDone {
		s.mu.Unlock()
		return ErrIllegalHeaderWrite
	}
	s.headerOk = true
	if md.Len() > 0 {
		if s.header.Len() > 0 {
			s.header = metadata.Join(s.header, md)
		} else {
			s.header = md
		}
	}
	md = s.header
	s.mu.Unlock()
	if _, err := wait(s.ctx, nil, nil, t.shutdownChan, t.writableChan); err != nil {
		return err
	}
	t.hBuf.Reset()
	t.hEnc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
	t.hEnc.WriteField(hpack.HeaderField{Name: "content-type", Value: "application/grpc"})
	if s.sendCompress != "" {
		t.hEnc.WriteField(hpack.HeaderField{Name: "grpc-encoding", Value: s.sendCompress})
	}
	for k, v := range md {
		if isReservedHeader(k) {
			// Clients don't tolerate reading restricted headers after some non restricted ones were sent.
			continue
		}
		for _, entry := range v {
			t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: entry})
		}
	}
	bufLen := t.hBuf.Len()
	if err := t.writeHeaders(s, t.hBuf, false); err != nil {
		return err
	}
	if stats.On() {
		outHeader := &stats.OutHeader{
			WireLength: bufLen,
		}
		stats.HandleRPC(s.Context(), outHeader)
	}
	t.writableChan <- 0
	return nil
}
Exemple #8
0
func (ss *serverStream) SetHeader(md metadata.MD) error {
	if md.Len() == 0 {
		return nil
	}
	return ss.s.SetHeader(md)
}